It took months before you asked questions. But this channel has existed for a long time, but it has not been popularized.

In fact, this name was given for a month-long attack song concert. If I remember correctly, it should be 12 July. Of course, it may be that I remember wrong. (? ▽`)。 I thought of this name. ▽`)。 Later, it was officially changed to Manchu in less than a month, and then the popularity exploded ~